Buy GRRReen Lithium Racing Batteries
The Lithium Racing Battery is a superior cranking-power replacement to lead-acid batteries in a lightweight, compact package.
The Lithium Racing Battery is available now in 20 and 40 Amp Hours:

20ah
7” x 2.9” x 6.6”
3.3 kg. / 7.25 lbs.
$230

40ah
7.7” x 6.3” x 5”
6 kg. / 13.2 lbs.
$390
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